Clueless in Nor Cal needs identification help

Okay I know these guys are still a bit young (they are only 4 weeks old) but I am getting scared as my kids (and me) are getting attached. We, and our neighbors, only want pullets but think there might be 1 or 2 roos in the mix that I will have to find a home for. Any insight is welcome and appriciated!!!!!!!!!!

The black one (aka Doty) we believe is a Jersy Giant and we think we might need to change its name to Doug. Hope not since its a friendly little thing that thinks your head is a cool roost!

The buff color one (aka Odd Ball) we believe is a Buff Rock and a pullet.

The 2 Easter Eggers (aka snuggles and Baby) can be a 50 50 split with snuggles (the darker one) being the momma of the group and baby (the lighter one) might being a sneaky roo!

I agree with Mahroni about the buff being a golden comet (and a female).

The easter eggers are both girls too - I can tell by their feather coloring/patterns (not on all easter eggers, but these two I can).

The black one doesn't look like a roo from that pic, but we'd need to see a closeup of the comb to be more accurate. It looks a lot like my black australorp chicks and they were very easy to sex at about 5-6 weeks of age - the roos' combs & wattles grew quickly. Check the bottoms of your black chick's feet - if they are yellow, than you are correct and it is a jersey giant - if they are white, than your chick is an australorp.